[Features] · A special grindstone that uses ceramic fiber as a cutting edge. A product lineup with abundant variety of sizes and particle sizes. · Attach to the dedicated holder. · It is a heat-resistant fiber stone for ultrasonic polishing devices that does not change up to 200°C. (Conventional product: 150°C) [Applications] · Compatible Materials: Tool Steel, Alloy Steel, General Steel, Stainless Steel, Aluminum, Copper